Belguim
They were developed by the Royal Navy circa 1830 in the UK
Duffel, named after the Belgian town where the style & fabric of the bag originated.
Italy (in a town named Pisa)
Norway has a town named Hell.
The only country that has a town named Blackwood is Wales. Blackwood is a Welsh town located approximately in the South Wales Valley region, near Newport and Cardiff.
Germany, the hamburger is named after the town in Germany, hamburg.
There are a number of saints named Teresa, each from a different town or country, so you need to be specific.
Norway has a town named Hell. It is located in the municipality of Stjørdal in Trøndelag county.
Mullingar is located in the country of Ireland. It's name means "the left-handed mill", and it is the county town of County Westmeath. The town was originally named Maelblatha.
Comoros. There is also a small town named Moroni in Utah, in the United States.
Germany
Meringues were invented in Switzerland in the town of Meiringen by an Italian chef named Gasparini.